Concrete-machine.



W. L. CANNIFF, DEGD. R. L. GANNIFF, ADMINISTRATOR.

CONCRETE MACHINE.

APPLICATION FILED DEO.12, 1912.

Patented July 15, 1913. G

" batch opposite the side next to the opening WILLIAM L. CANNIFF, DECEASED,

BY no: L. CANNIFF, ADMINISTRATOR, on NEW YonK, N. Y.

cononnrn-macnmn.

mower.

. To all whom it may concern:

Be it known that WILLIAM L. CANNIFF, now deceased, of whom the undersigned, ROY L. G'Aivmrr, who resides at 106 West I 5 One Hundred and Fifth street, in the borough of Manhattan, in the city, county, and State of New York, is the duly appointed administrator, invented certain new and useful Improvements in Concrete-Machines of which the following is a specification.

The improvements relate to machines for mixing and discharging and placing mixtures of cement and other substances, commonly called concrete, cement and grout, and in which mixtures the said materials are mixed with a suitable quantity of water and brought to a more or less fluent state.

The invention consists in the construction and combination of the apparatus and its parts and the manner of treating the concrete hereinafter described and claimed, and illustrated in the accompanying drawings whereby the device is adaptedfor the uses and purposes herein set forth, or which will be apparent to those skilled in the art.

In the drawings, the figure is a side elevation of a concrete machine embodying the improvements, with certain parts broken away to expose inner arts.

Heretofore it has een the practice, to some extent,'to mix grout in a vessel provided with a supply of compressed air and to then utilize the compressed air to eject the mixed grout from the vessel, the air pressure being provided on the side of the of the vessel, so that the grout is-pushed out through the opening by the air pressure behind it. An apparatus adapted to operate in this manner is 'shown in Patent No. 873,345 of December 10, 1907, to William L. Cannifl, the deceased inventor of thepresent improvements. By the use of this apparatus the disadvantages of the processof ejecting concrete which usually contains coarse materials such as crushed'stone or gravel-by means of air pressure behind the mass in the mixing vessel are avoided, and the concrete may be mixed, ejected, and placed at the point where it is to be used, at uniform speed and pressure, and in a thoroughly mixed state.

In the drawings, A represents a cylindrical vessel for the reception of concrete materials. It is provided with a handhole Specification of Letters Patent. Application filed December 12, 1912. Serial Ho.736,309.

pressed air inlet has been opened.

Patented July 15,1913.v

A near its convex bottom and is suitably mounted on legs A It is also provided with a charging port B provided with a lunged door B opening inward and havmg a lifting ring B Through this port themixed concrete or concrete materials may be poured into the cylinder.

The door is adapted to be held closed by the air presf sure withinthe cylinder after the com- The cylinder is also provided with an inlet E for compressed air through which the compressed air pipe F with valve F communicates with the interior of the vessel.

The cover of the concrete vessel A is pro vided with a discharge opening D an interiorly threaded collar D through which the discharge pipe 0 extends. This discharge pipe is exteriorly threaded as shown at C and its lower portion is turned at an angle of about 45 degrees and mi-. tered at its lower edge so that the mouth of the discharge pipe is horizontally disposed and consequently..substantially parallel with the upper surface of the contents of the cylinder. A handle G is secured to the dis charge pipe a suitable distance above the top of the cylinder or vessel A, bylwhich,

alfected by the movement in the direction of the outlet. The discharge pipe may be rotated by any desired means, but it should always be so operated that its lower end is constantly maintainedin contact with the upper surface of thematerials the vessel, or in proximity thereto. It will be underdle G may be provided with a suitable connection with means for conveylng the concrete tothe point where it is to beplaced, and that the said oonnectionshould be such as to permit the rotation of the said discharge stood that the discharge pipe above the hanpipe, when it is made in the form shown in the drawing.

In operating the device the materlals are first placed inthe vessel A and the door B closed. The valve of the pipe F is then opened and air under pressure thus admitted. This will cause the compressed air to seek to escape through the concrete and consequently to pass up through the discharge pipe C, carrying the concretefl'with it. The discharge pi e is then rotatedso as to cause its lower en to revolve on or near the surface of the body of concrete and to be gradually lowered throughthe action. of the screw threads of'the pipe'and the collar D. The contact of the-lower end of the pipe with the bodyof concrete is made evident to the operator by the noise caused bv the ance of the discharge pipe to rotarymovement, and in this manner he will be able to maintain the proper relation between the lower end of the discharge pipe and the concrete in the'vessel. It will be understood that the invention is not limited to the precise construction and arrangemenffbf apparatus shown in the drawing and herein described, but that changes in the apparatus may be made, and

that some of the parts'may be omitted or supplemented by other parts without "de- 'therefrom. Thus it is apparent partin that 0t er means may be employed to efiect .the vertical or lateral movement, or both movements, of the discharge conduit; that the upper surface or level of the'materials in the vessel may be controlled in such a .manner as to maintain it in proper relation with the intake of said disc arge conduit; and that mechanical or other means for effecting a further mixture of the materials may be provided in the vessel or in the discharge pipe, or elsewhere.

What I claim is: i

'1. In a device of the character described, the combination ofa vessel adapted to contain concrete or concrete materials, provided with an opening for supplying the same to the vessel, a door for closing said opening, means for in'ecting air under pressure into said vessel a ove the upper surface of the concrete and a dischar e pipe said discharge pipe extending from the surface of the said concrete to the outside of the vessel at a point above the .said concrete and having an intake opening in roximity to the said surface, and means -or maintaining the said opening, in such proximity during variations in the quantity of concrete in the vessel.

2. In a device otthe character described,

the combination of a vessel adapted to contain concrete or concrete materials, provided with an opening'for supplyingthe same to the vessel, a door for closing said opening, means for injecting air under pressure into said vessel above the upper surface of the concrete and a dischar e pipe saiddischarge pipe extending from the surface of the said said discharge pipe.

agitation of the concrete and by the resist- 7 concrete to the outside of the vessel at a point above thesaid concrete, and means for raising and lowering the intake end of 3. In a device of the character described, the combination of a vessel adapted to receive concrete materials provided with an opening through which it may be charged, a door for closing said opening, a conduit for supplying air under pressureto the upper part of said vessel and an outlet conduit extending from the upper part of said vessel to a point within the same, and means for moving said outlet conduit vertically and laterally.

4. In a device of the character described, the combination of a vessel adapted to receive concrete materials provided with an opening through which it may be charged, a door for closing said opening, a conduit for 5 supplying air under 'ressure to the upper part of said vessel an "'anroutl'et'coziluitex.-.v tending from the upperpart of said vessel to a point within the same, and means for simultaneously moving said outlet vertically and'laterally.

5. In a device of the character described, the combination of a vessel, means for chargin and discharging the same, \and means. or .suppl conduit 0 ng air under pressure to said vessel, the ischarging means comprisinig a conduit having an intake opening and a usting means for maintaining the said. intake opening in'proximity to the upper surface of the material with which the yessel is charged through substantially all variations in the quantity of said material in thevessel.

6. The process of mixing and discharging concrete, which consists in placing the materials within a closed vessel, supplying air under pressure to the up er part of said vessel above the'said materials and causing the said materials to escape upwardly fromethe "7 body of materials in said vessel an'd from a point adjacent to the. upper'surface of said material e 7. In a device of the character described the combination of a vessel adapted to contain materials, provided with an opening for supplying said materials, means for preventing the contents of-the vessel from having egress through said opening, 'said vessel also provided with means having an outlet or discharge opening, means for causing '--'the pressure; within said vesselto exceed'thepressureat the said discharge opening and means for adjusting the said meanswith discharge opening to the level of the materials in said vesseFWithout varying the o erativerelationship between the 831d dlse arge opening and the said means for causing pressure.

8. In a device of thecharacter described,

the combination of a vexel adapted to con-j 1 0 tain materials, provided vvith an opening Signed at the cit county and State of y for supplying said materials thereto, an New York this 11th day of December, 1912. 10

outlet or discharge conduit, means for vary- I ROY L. GANNIFF,

ing the relative pressure in said vessel and Administrator of the estate of William, L. 5 discharge conduit, and means whereby a Oannifi', deceased.

varying vertical relationship between the Witnesses:

bottom of said vessel and the intake end of S. J. Cox,

said conduit may be'had. A. C. MoDoNNELL. 

